You buy very cheap Yes shares (say 3 cents) on rare events when you think the true odds are higher than the price implies (closer to 8%). Most of these bets lose, but the occasional winner pays off many times over, so the edge is being more accurate about small probabilities than the crowd. This only works with a big enough bankroll to survive long losing streaks and a written thesis for every longshot you take.
Markets on Polymarket where fat-tail / skew trading is the natural play: